An invisible aerosole canister containing a substance, which, on instant contact with the skin gives you exemption / immunity to most of the common viruses and diseases that all gay people have.
Can be used optionally with a hissing sound from the mouth.
For most effective use, spray liberally over your entire body including in your belly button and around your peehole.

A man enters a gentlemens lounge. The room is dark and slightly dingy, but he carries on unfalteringly to the bar to order himself some refreshment.
On his approach, there is no barman in sight - however as he nears ever closer, he spies a particularly homosexual looking ginger haired, midget barman dressed in leather biker clothes and high heels, lurking below bar height, masturbating to a little portable television. On closer inspection, the dwarve is watching an episode of Diffrent Strokes, with the screen seemingly stuck on repeat of a particularly amusing 5 second clip of Gary Coleman dancing topless.
As a precaution, the gentleman takes out his invisible canister of Gay Spray, and applies an aggressive covering over his entire body, making precise and accurate hissing noises each time our heros finger is depressed on the invisible canisters button.